Question: Exercise 24 gave a random sample of 20 ACT scores from students taking college freshman calculus. Calculate a 99% CI for the standard deviation of

Exercise 24 gave a random sample of 20 ACT scores from students taking college freshman calculus. Calculate a 99% CI for the standard deviation of the population distribution. Is this interval valid whatever the nature of the distribution? Explain.

Data From Exercise 24

Here is a sample of ACT scores (average of the Math, English,

Here is a sample of ACT scores (average of the Math, English, Social Science, and Natural Science scores) for students taking college freshman calculus: 24.00 28.00 27.75 27.00 24.25 23.50 26.25 24.00 25.00 30.00 23.25 26.25 21.50 26.00 28.00 24.50 22.50 28.25 21.25 19.75

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To calculate a confidence interval CI for the standard deviation of a population distribution you can use the chisquare distribution For a 99 confiden... View full answer

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